baber/WOPTO huggingface dataset:
Patent GB-703134-A (GB)
Title: An improved power operated mowing machine
IPC: A01D34/66
Filed: 1952-03-10
Abstract: 703,134. Mowing machines. PORTER, G. I. M. March 10, 1952 [March 12, 1951], No. 6132/52. Class 6 (3) A mowing machine, of the kind having horizontal.rotary-disc cutters 10 arranged along an elongated wheeled frame or boom 11, is arranged to be towed behind tractor 13 so that the axis of the frame is either parallel to the line of travel of the tractor, for transport, or extends .transversely to this line, in working, at various positions of adjustment. The boom 11 is tubular and is supported at each end on a castor assembly 12 adjustable for height. The boom is towed by a pair of links 15, 16 attached to the tractor drawbar 14, the .link 16 being telescopic to permit the angling of the boom relatively to the tine of draught. The boom is adjustable about its own axis, to tilt the cutters, through a turnbuckle 21 connected between a bracket 19 on the boom a the forward end 22 of the link 15. Drive to the cutters is transmitted from a take-off 25, through a telescopic shaft 26, a pulley 29 and a belt 30 to pulleys 31 on the cutterspindles. Each cutter comprises a polygonal disc 39 carrying triangular knives 40, each disc having U-shaped pieces 41 projecting from its upper surface which serve to throw cut crops to one side.
Patent GB-1300823-A (GB)
Title: Method of diffusing impurities into semiconductor wafers
IPC: H01L21/22
Filed: 1970-02-09
Abstract: 1300823 Semi-conductor devices LICENTIA PATENT-VERWALTUNGS GmbH 9 Feb 1970 [22 Feb 1969] 6187/71 Heading H1K The dopant source in a sealed ampoule semiconductor diffusion process consists of doped semi-conductor wafers, the impurity concentration in the dopant-receiving wafers being controlled by the ratio of the surface areas of the source wafers and the receiving wafers and by the spatial arrangement of the source and receiving wafers. The total surface area of the source wafers is greater than that of the wafers to be diffused. In the arrangement shown a block of receiving wafers 6 is spaced from four blocks of source wafers 5, the latter wafers having a greater surface area than the former by a factor of between 1À3 and 5. Alternative arrangements include source and receiving wafers positioned alternately, either spaced from one another or touching, or separate spaced blocks of source wafers and receiving wafers, the former wafers all being in contact and the latter wafers being either in contact or mutually spaced. After each diffusion process a thickness of the source wafers may be removed by etching or grinding to allow them to be used again in further diffusion processes. The receiving wafers may be oxide masked. The diffusion of B into Si from B-doped Si wafers is particularly referred to, and the invention may be used to form the base region in PNP or NPN transistors.
Patent GB-643974-A (GB)
Title: Improvements in or relating to the production of phenanthridine compounds
Inventor: BARBER HARRY JAMES
Filed: 1946-02-27
Abstract: 9-Phenylphenanthridines (which may contain nitro groups) are made by (1) heating a 2-benzamido-diphenyl unsubstituted in the 21- or 61-position with a pentavalent phosphorus chloride or bromide in an organic ionizing solvent to form an imino halide, which is then cyclized in situ to the phenanthridine by heating to at least 195 DEG C. in an organic non-hydroxylic ionizing solvent medium and in the presence of an inorganic halide catalyst until evolution of hydrogen halide has ceased, or (2) in a single stage, by heating the 2-benzamidodiphenyl with phosphorus oxychloride in an organic non-hydroxylic ionizing solvent medium at at least 200 DEG  C. till evolution of hydrogen halide has ceased.  The inorganic halide referred to must be zinc, aluminium, stannic, bismuth, mercurous, mercuric, tantalum, ferric, or zirconium chlorides, or phosphorus or bismuth oxychlorides.  Solvents specified are nitrobenzene and nitrotoluene.  The products may be converted to quaternary salts without isolation from the reaction mixture.  In examples: 4.41-dinitro-2-(a -chlorobenzal)-aminodiphenyl is ringclosed to 2.7-dinitro-9-phenylphenanthridine in nitrobenzene using (1) ferric chloride; (2) stannic chloride; (3) aluminium chloride; (4) zinc chloride, and (5) phosphorus oxychloride.  Also in examples (6) 4.41-dinitro-2-aminodiphenyl is benzoylated in nitrobenzene, converted to the iminochloride with phosphorus pentachloride, and ringclosed with stannic chloride, giving 2.7-dinitro-9-phenyl-phenanthridine, which is converted to the quaternary sulphate with dimethyl sulphate, and from sulphate to chloride with sodium chloride.  Also in examples, the following bodies are converted to their iminochlorides with phosphorus oxychloride, and ringclosed with stannic chloride; (7) 4.41-dinitro-2-benzamidodiphenyl; (8) 41-nitro-2-(m or p-nitrobenzamido)-diphenyl; (9) 4.41-dinitro-2-(p-nitrobenzamide). Finally, (10) 4.41-dinitro-2-benzamidodiphenyl is heated at 210 DEG C. with phosphorus oxychloride in nitrobenzene in one stage. Specifications 372,859, 511,353, 520,273, 577,990 and 587,673 are referred to.
Patent GB-178266-A (GB)
Title: Improvements in and relating to electric distribution systems
IPC: H02J3/14
Filed: 1921-02-24
Abstract: 178,266. British Thomson - Houston Co., Ltd., (General Electric Co.). Feb. 24, 1921. Systems depending on the use of static transformers.-A supply system comprising main transformers at the central station and transformers at a substation supplying a plurality of loads, is provided with a switching arrangement for the main n transformers whereby one of the loads may be removed from the system. The windings A, B, Fig. 1, of the main transformer are connected to the windings P<1>, P<2> of the substation transformer by leads 10, 11, 12, and a double-pole switch K is provided to charge the connections between the winding B and the leads 11, 12. In the position shown, the loads 26, 26<1>, 25 are supplied by the secondary windings S<1>, S<2>. When the switch K is moved to its other position the secondary windings S<1>, S<2> oppose each other and the load 25 is cut out. In a modification, a switching arrangement is provided to vary the connections of the windings A, B from those shown in Fig. 1 to those shown in Fig. 3.
Patent GB-806091-A (GB)
Title: An improved supervisory arrangements utilising a rectifying impedance as sensing means
Filed: 1955-03-03
Abstract: 806,091. Controlling burners. LANDIS & GYR A. G. March 3, 1955 [March 3, 1954], No. 6319/55. Class 75(1) [Also in Group XL(b)] In a supervisory arrangement having a rectifying impedance as a sensing means, the impedance is connected into the ignition electrode circuit of a glow discharge tube 7 and the ignition electrode circuit has at least one capacitor 11 the charging of which takes place only during the negative half cycles of an alternating current potential applied to the anode 6 of the discharge tube. The arrangement shown is used in a burner installation, the rectifying impedance being a photo-electric cell 23 sensitive to the luminous flame of a pilot burner. The arrangement is such that if a flame exists at the pilot burner a relay 8 in the anode circuit of the discharge tube is energized and operates contacts to maintain open a regulating valve supplying a main burner. The capacitor 11 is connected to a tapping 28 on the supply transformer between the anode terminal 3 and a further tapping 5 connected to the cathode 10. The anode voltage of the photo-electric cell is in antiphase with the anode voltage of the discharge tube. When the photo-cell is illuminated by the pilot burner flame the condenser 11 charges on the half cycles when the anode voltage of the photo-cell is positive, and during the alternate half cycles a relatively small discharge of the capacitor 11 takes place through a resistance 14. Consequently a voltage builds up on the capacitor 11 to bias the ignition electrode 13, positively. Ultimately this bias voltage and a positive half cycle of the alternating voltage applied to the ignition electrode 13 are sufficient to start a discharge between the ignition electrode and the cathode 10. The main discharge between anode 6 and cathode 10 then follows and energizes the relay 8. The anode current is smoothed, so that the relay remains energized during the half cycles when the anode 6 is negative, by a dry rectifier 9 or by a condenser. Alternatively a slow release relay may be used. The relay 8 may open a contact 29 in the circuit of the resistance 14 so that the small discharge of the capacitor 11 between charging half cycles is. prevented. The capacitor 11 is connected in series with a smaller capacitor 12 which is bridged by a resistance 15. A limiting resistance 25 is connected in the circuit of the photocell. Fig. 3 (not shown) shows a similar circuit using an electrode in the flame of the pilot burner as the sensing means and a glow discharge -tube of the type in which the discharge between ignition electrode and cathode is initiated by a negative voltage on the ignition electrode. The cathode tapping on the supply transformer is located between the anode and ignition electrode tappings. The anode tapping and the pilot burner are earthed. A photocell may be used as sensing means instead of an electrode in the flame.
Patent GB-540230-A (GB)
Title: Improvements in and relating to the casting of metals
IPC: B22D13/02
Filed: 1940-04-08
Abstract: 540,230. Casting-machines making projectiles. STANTON IRONWORKS CO., Ltd., and WILSON, P. H. April 8, 1940, No. 6328. [Classes 83 (i) and 83 (ii)] In casting open ended bottle-or-box-like castings such as are used for making explosive shells having a bore reduced towards the open end, the metal is poured into a mould 1, having a base penetrated by a member 3 carrying a core 7 of moulding sand or the like until the core is submerged and the mould is rotated at a speed not fast enough to expose the core, the member 3 and core 7 being removed through the hole 4 after the metal has solidified. The excess metal 8 is then sawn or otherwise cut off. Specification 540,229 is referred to.
Patent GB-157005-A (GB)
Title: Improvements in calipers or dividers
IPC: B43L9/20
Filed: 1920-03-03
Abstract: 157,005. Rantens Verktygsfabrik J. Asander & Co. Jan. 24, 1920, [Conventien date]. Linear-dimension gauges. -The legs 1, 2 of a pair of callipers or dividers are pressed apart by a circular spring 4 through which passes a screw 5 secured to the pivot 3, and crossed links 6, 7 are pivoted to the ends of the legs and to a sleeve 10 which slides over the screw 5 and abuts against a nut 11. In use, the legs are gripped in the hand, the nut 11 slackened, and the legs allowed to move under the influence of the spring to an approximately correct position. The final adjustment is then made by moving the sleeve 10 by operating the nut 11.
Patent GB-758954-A (GB)
Title: Stabilization of vinylpyridines
IPC: C08F2/38
Filed: 1954-03-05
Abstract: A vinylpyridine is stabilized against polymerization by a method comprising adding to it a small amount of methylene blue or 1-nitroso-2-naphthol.  Compounds in which polymerization may be inhibited are those of formula <FORM:0758954/IV(a)/1> in which R is methyl or ethyl, and n is an integer from 0 to 4 inclusive, e.g. 2-, 3- and 4-vinylpyridines, 5 - ethyl - 2 - vinylpyridine, 2 - methyl - 5 - vinylpyridine, 2 - ethyl - 5-vinylpyridine, 2 - methyl - 6 - vinylpyridine and 2,4 - dimethyl - 6 - vinylpyridine.  Methylene blue or 1-nitroso-2-naphthol may be used to inhibit polymerization during ordinary storage conditions or during distillation.ALSO:Vinyl pyridines of formula <FORM:0758954/III/1> in which R is methyl or ethyl and n is an integer from 0 to 4 inclusive, may be inhibited against polymerization during distillation by adding small amounts of methylene blue or 1-nitroso-2-naphthol.
Patent GB-434212-A (GB)
Title: Improvements in watertight covers for ships' hatchways
IPC: B63B19/19
Filed: 1934-02-28
Abstract: 434,212. Ships' hatches. TELL, E. E. VON, 20, Frolundagatan, Gothenburg, Sweden. Feb. 28, 1934, No. 6531. [Class 113 (i)] A hatch covering comprises three sections 4, 7, 9 of which the section 4 is hinged to the top of the hatch section and the remaining sections are hinged to each other in such a manner that when opening the hatch the sections are folded back on each other and the whole hatch cover is then turned about the hinges 5 of the first section 4. The hatch covers are clamped at their edges by bolts 18, packing such as described in Specification 381,481 being interposed between hatch coaming and cover. Eves 20 on the lower ends of the bolts 18 work on crossbars 21 so that, when the bolts are loosened they may be bodily slid back and laid flat on the rest bar 22. Packing is applied to the transverse abutting edges of the sections. Specification 348,017 also is referred to.
Patent GB-565133-A (GB)
Title: Improvements in or relating to splitting, skiving or like machines or to products obtained by the use of such machines
IPC: C14B1/14
Filed: 1943-04-23
Abstract: 565,133. Cutting machines for leather &c. BRITISH UNITED SHOE MACHINERY CO., Ltd., BENNION, L. H., and SMART, W.. A. April 23, 1943, No. 6542. [Class 31 (i)] A machine for splitting or skiving leather &c. which is especially applicable for making boot and shoe counters by means of a knife 7 arranged close to a matrix roller 3 and feed roller 5, is constructed with an improved means for controlling a series of presser members 13 with ends 29 arranged between grooves in the roller 5 and adapted to force the workpieces into the matrix 11 which is shaped similarly to the work-piece, and is skived by the machine to form a bevelled edge therearound. The presser members are freely mounted on a shaft 15 carried by a bracket 17 which can be adjusted by screws 63 and which can be readily detached from the machine after the feed magazine 75 and a cam 51 have been removed. The blanks are fed automatically from the magazine, and the cam 51 controls the position of the ends 61 of the presser members and permits the blank to be pressed into the matrix when blocks 49 on the presser members 13 engage a recess 59 in the cam 51 which is shaped similarly to the matrix. The blocks 49 engage the cylindrical portions of the cam as the blank is advanced and keep the pressers from contact with the roll 3. The pressers are controlled by springs 33 independently adjustably attached to a bar 37, so that the spring-pressure of each member is variable and the pressers come into action at different times and rise to variable heights, but in no case does a presser rise to the bottom of the matrix groove. To permit of wear, the parts 31, 47 are connected by a screw 43. Operation of a cam 67 acts to raise the members 47 and lower the tips 29 of the pressers, and thus permits adjustment of parts which are normally out of view. The raising of, blocks 49 with the members 47 permits removal of the cam roller 51. The cam 51 may be fitted with a projection which depresses the ends 61 just before the blank is advanced.
Patent GB-589164-A (GB)
Title: Improvements in or relating to vehicles
IPC: B62D25/20
Filed: 1945-03-16
Abstract: 589,164. Vehicle bodies. PRESSED STEEL CO., Ltd., and MATON, W. C. March 16, 1945, No. 6628. [Class 108 (i)] In a chassis-less vehicle having longitudinal side frame members secured at each side to the base of the body to provide girder members serving for the attachment of road wheels and suspension systems therefor and for the mounting of the power unit, each girder member is of hollow section and is formed with an opening or openings therein facing downwardly to provide ventilation of, and drainage from, the hollow section girders. The chassis frame side member 16, Fig. 4, and the bottom margin 11 of the body sides form a hollow section girder member spaced apart at the flanges 12, 14 by distance pieces 17 with or without a splash guard 20. In Fig. 6 the gaps are formed by depressions in the flange 26 which are protected by a removable splash guard 29 attached to the girder by spacers 30, the outer edge 31 being turned over to form a finishing strip or bumper which may be plated or sheathed with rubber. The lower edges of the girder may be spaced apart by strips 38, Fig. 11, and the splash guard may be grooved to form a drain channel 47. Specification 418,257 is referred to.
Patent GB-108836-A (GB)
Title: Improvements in Devices for Selfactingly Locking the Starting and Stopping Rods of Selfacting Mules and other Machines.
Inventor: DRANSFIELD JAMES
IPC: D01H3/00
Filed: 1917-05-11
Abstract: 108,836. Dransfield, J. May 11, 1917. Mules and twiners.-In means for locking the starting and stopping rods of mules, twiners, &c. in the start or stop position, or in both, a bolt e slides in a slot d in the framing a and is retained in position, to keep the rod b with its notch c in engagement with the framing, by a weighted lever f engaging a slot g in the bolt e, from which it is removed by hand when desired.
Patent GB-638044-A (GB)
Title: Improvements in or relating to earth-moving equipment of the kind including a scraper-bowl
IPC: E02F9/28
Filed: 1948-03-04
Abstract: 638,044. Bowl-type earth scrapers. BLAW KNOX, Ltd., and CONACHER, J. E. March 4, 1948, No. 6769. [Class 68 (i)] In a bowl-type earth scraper the digging angle of the blade 8 with respect to the floor of the bowl 2, when in its normal loading position, can be varied since the blade is detachably secured to a plate carried by a shaft 3 rotatably mounted in the upper ends of slots 7 which extend upwardly and then rearwardly in the side cheeks of the bowl, the shaft being retained in the slots by brackets 5. Rotation of the shaft is effected by a lever 15, at one or both ends of the shaft, which lever lies between oppositely directed adjustable screws 16 carried in screw-threaded lugs 17 secured to the adjacent side cheek. As an alternative, each lever may have formed therein an arcuate slot through which passes a clamping screw which engages with the adjacent side cheek.
Patent GB-106141-A (GB)
Title: Improvements relating to Bomb Throwing Devices.
Inventor: OWENS JOHN SWITZER
IPC: F41A3/94
Filed: 1916-05-12
Abstract: 106,141. Owens, J. S., and Vermehr, J. M. de M. May 12, 1916. Ordnance breech mechanism; machine guns.- Relates to bomb-throwing devices and consists in a magazine-fed device in which a barrel extension houses a recoil spring and hydraulic buffer, the breech-block being adapted to recoil in the extension and being held in the rear position, if desired, by a pawl. A firing-lever depresses the pawl, and the firing-pin is cocked and released automatically during the return stroke of the breech-block. In the example shown, the barrel 1 has an opening 2 through which bombs are introduced from the magazine 3. The breech-block 4 slides in the barrel and carries a central spring- operated striker 5 and a cocking-lever 7 which is pivoted at 8 and passes through a slot in the striker. The toe a of the lever 7 engages a slot 10 in the barrel. A pawl 12 is pivoted at 13 in a recess 11 in the breech-block and is adapted to engage a stop 36 on the barrel extension and the toe 31 of a check spring 30. A tubular tail-rod 15 is attached to the breech-block and provided with a piston 16 working in an oil cylinder 17 which has a taper spindle 18 to enter the tube 15 during recoil. A spring 20, compressed during recoil, is provided to return the breech-block to the firing position. The trigger mechanism comprises a lever 22 pivoted at 23 and retained in normal position by a spring 24 which also acts upon a pawl 26 pivoted at 27 in a slotted part 25 of the lever 22. A transverse pin 28 on the pawl 26 engages ledges 29 struck up from the housing.21 and arranged to move the pawl to the left as it rises, thereby releasing the spring-controlled pin 33 which also is engaged by the pawl. In operation, a rod is first introduced into the barrel and the breech-block is pressed rearwards until the pawl 12 is retained by the stop 36 and the toe 31 of the spring 30, and the toe a of the cocking- lever 7 is in the slot 35. A bomb falls from the magazine 3 to the gun breech in front of the breech-block. The lever 22 is now raised, and the pawl 26 lifts the pin 33 which, in turn, disengages the pawl 12 from the stops 36, 31 so that the breech-block moves forward. The cocking-lever 7 is moved to the right to cock the striker by the toe a engaging the inner surface of the tube 19, and the striker is released when the toe a reaches the slot 10. Means may be provided to hold up the pin 33 when it is desired to make the gun automatic.
Patent GB-932043-A (GB)
Title: Improvements in and relating to a method and apparatus of the preparation of cytological or other specimens
IPC: G01N1/06
Filed: 1961-02-24
Abstract: 932,043. Drying tissue specimens. R. THAINE. May 11, 1962 [Feb. 24, 1961], No. 6863/61. Addition to 905,630. Class 49. [Also in Group XIII] In the method and apparatus according to the parent Specification the jar 2 has a side tube 2d into which telescopes a stem extension 16 of a flask 18 containing a liquid embedding material so that rotation of the flask about the axis of the stem decants the liquid on to the specimen in the dish 6. The dish rests on a nylon pot 5, the interior of which opens through the table 3 into a circular spigot 19 which enters a doublewalled copper cup 21. The inner wall 21a of the cup is open at the bottom and the outer wall is closed, and the cup has a tube 22 connected to a vacuum pump to extract air from the chamber formed by the jar 2. The cup depends into a flask 23 removably suspended by hooks and filled with refrigerant to form a cold trap for condensing lubricant vapour from the pump.
Patent GB-1506786-A (GB)
Title: Oil compositions
IPC: C09K23/16
Filed: 1976-02-20
Abstract: 1506786 Lubricants SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 20 Feb 1976 6870/76 Heading C5F [Also in Division C3] Lubricating and other oil compositions comprise 0À01-15% of a basic dispersant which is the reaction product of a C-50+ alkyl- or alkenylsuccinic acid or anhydride and a polymer of an alkylene imine. Conventional additives may also be present: in Exs Zn-dialkyldithiophosphate with and without polyisobutenyl succinate of pentaerythritol was present.
Patent GB-832304-A (GB)
Title: Separable connection for electrical conductors and cables
IPC: H01R13/53
Filed: 1958-03-04
Abstract: 832,304. Two-part couplings. LANDUND SEEKABELWERKE A.G. March 4, 1958 [March 12, 1957], No. 6877/58. Class 38 (1). In a plug-and-socket coupling for multi-core cables (Fig. 2) an air-tight seal is made round the joint between the cast resin insulating bodies 6a, 6b surrounding the engaged plug-and socket connectors 5a, 5b by inserting ring- shaped elastic-filler members 8 in grooves in the end faces of these insulating bodies which engage at the edges and in which the connectors 5a, 5b, the cable cores 3a and the cable end 2a are embedded. Polyamide rings 11 which may be bonded on to the members 8 are used to prevent the members 8 from being squeezed into recesses and from spreading out between the meeting faces of bodies 6a, 6b. In a modification (Fig. 4) for a high-tension cable, the contacts are enclosed in insulating sleeves 12a, 12b which may be of vulcanized rubber. Each sleeve is enclosed in a conducting holder 13a, 13b which may be of aluminium. The holders are held in locating discs 14a, 14b and are filled with cast resin compound 6a, 6b in which the contacts, the cores 4a, 4b and the ends of the earthed conducting envelopes 13a, 13b are embedded. The end faces of the compound blocks are sealed by rubber rings 18a, 18b. The contacts 5a, 5b have flexible tapering cavities to accommodate the tapered end-pieces 19a, 19b to which the bare ends of the cable cores are secured. The contacts may be of types, other than pin-and-socket type shown, which allow of engagement by relative axial movement.